Announcement PDF To Company Name/Scheme ACN/ARSN 1. Details of substantial holder (1) Name ACN/ARSN (if applicable) - 30/10/2026 The previous notice was given to the company on 20/10/2025 The previous notice was dated 16/10/2025 2. Previous and present voting power *The % substantial is based on the shares on issue of 156,800,856 as disclosed by the Company on 30-10-2026. 3. Changes in relevant interests 4. Present relevant interests Particulars of each relevant interest of the substantial holder in voting securities after the change are as follows: Nature of relevant interest (6) Class and number of securities Person's votes Power to dispose of, or control the exercise of a power to dispose of, the securities. 4,315,044 ORDINARY 4,315,044 Power to dispose of, or control the exercise of a power to dispose of, the securities. 530,922 ORDINARY 530,922 Power to dispose of, or control the exercise of a power to dispose of, the securities. 201,838 ORDINARY 201,838 Power to dispose of, or control the exercise of a power to dispose of, the securities. 1,532,120 ORDINARY 1,532,120 Holder of relevant interest Regal Partners Funds Management Pty Limited and its associates Registered holder of securities UBS NOMINEES PTY LTD Person entitled to be registered as holder (8) UBS AG, AUSTRALIA BRANCH Regal Partners Funds Management Pty Limited and its associates HSBC CUSTODY NOMINEES (AUSTRALIA) LIMITED A/C 2 MORGAN STANLEY & CO INTL PLC MERRILL LYNCH (AUS) NOMINEES PTY LTD Regal Partners Funds Management Pty Limited and its associates Regal Partners Funds Management Pty Limited and its associates HSBC CUSTODY NOMINEES (AUSTRALIA) LIMITED MERRILL LYNCH INTERNATIONAL LIMITED GOLDMAN SACHS INTERNATIONAL, LONDON ORDINARY Particulars of each change in, or change in the nature of, a relevant interest of the substantial holder or an associate in voting securities of the company or scheme, since the substantial holder was last required to give a substantial holding notice to the company or scheme are as follows: Consideration (9) 11,496,116 7.39% 10,011,271 6.38%* Holder of relevant interest Date of acquisition See Annexure 2 Class and number of securities Class of securities (4) Voting power (5) Person's votes Previous notice Current notice Person's votes Voting power (5) Form 604 Corporations Act 2001 Section 671B The total number of votes attached to all the voting shares in the company or voting interests in the scheme that the substantial holder or an associate (2) had a relevant interest (3) in when last required, and when now required, to give a substantial holding notice to the company or scheme, are as follows: Notice of change of interests of substantial holder There was a change in the interests of the substantial holder on Rivco Australia Ltd (RIV) 611 976 517 Regal Partners Funds Management Pty Limited and its associates (see Annexure 1) Power to dispose of, or control the exercise of a power to dispose of, the securities. 3,095,254 ORDINARY 3,095,254 Power to dispose of, or control the exercise of a power to dispose of, the securities. 295,000 ORDINARY 295,000 Power to dispose of, or control the exercise of a power to dispose of, the securities. 41,093 ORDINARY 41,093 Regal Partners Funds Management Pty Limited and its associates PALM BEACH NOMINEES PTY LIMITED BARRENJOEY MARKETS PTY LIMITED Regal Partners Funds Management Pty Limited and its associates J.P. MORGAN PRIME NOMINEES LTD J.P MORGAN SECURITIES PLC Regal Partners Funds Management Pty Limited and its associates CITICORP NOMINEES PTY LIMITED CITIGROUP GLOBAL MARKETS LIMITED 5. Changes in association 6. Addresses The addresses of persons named in this form are as follows: Signature print name capacity sign here date Annexure 1 Details of Substantial Holders ACN 610 797 138 107 576 821 129 188 450 REGAL PARTNERS LIMITED Annexure 2 Changes in Relevant Interests Date Nature of Change Consideration given in relation to change Number of securities affected Class of securities Persons votes affected 28/01/2026 Sell 134421.41 86151 Ordinary 86151 22/07/2026 Sell 188238.56 132348 Ordinary 132348 6/08/2026 Sell 184800.00 132000 Ordinary 132000 6/08/2026 Sell 72982.31 51978 Ordinary 51978 The persons who have become associates (2) of, ceased to be associates of, or have changed the nature of their association (9) with, the substantial holder in relation to voting interests in the company or scheme are as follows: Ilana Stringer REGAL PARTNERS FUNDS MANAGEMENT PTY LIMITED LEVEL 46, GATEWAY, 1 MACQUARIE PLACE, SYDNEY NSW 2000 N/A Regal Partners Funds Management Pty Limited as investment manager (and, where applicable, Regal Partners Holdings Pty Limited as trustee) (and Regal Partners Limited by virtue of its control of such entitles) Regal Partners Funds Management Pty Limited as investment manager (and, where applicable, Regal Partners Holdings Pty Limited as trustee) (and Regal Partners Limited by virtue of its control of such entitles) Name and ACN/ARSN (if applicable) Nature of association Name REGAL PARTNERS LIMITED Address LEVEL 46, GATEWAY, 1 MACQUARIE PLACE, SYDNEY NSW 2000 Name REGAL PARTNERS HOLDINGS PTY LIMITED 3/11/2026 REGAL PARTNERS HOLDINGS PTY LIMITED LEVEL 46, GATEWAY, 1 MACQUARIE PLACE, SYDNEY NSW 2000 REGAL PARTNERS FUNDS MANAGEMENT PTY LIMITED Person whose relevant interest changed Regal Partners Funds Management Pty Limited as investment manager (and, where applicable, Regal Partners Holdings Pty Limited as trustee) (and Regal Partners Limited by virtue of its control of such entitles) Regal Partners Funds Management Pty Limited as investment manager (and, where applicable, Regal Partners Holdings Pty Limited as trustee) (and Regal Partners Limited by virtue of its control of such entitles) Director 13/08/2026 Sell 8000000.08 5882353 Ordinary 5882353 13/08/2026 Buy 8000000.08 5882353 Ordinary 5882353 13/08/2026 Sell 207780.50 149214 Ordinary 149214 14/08/2026 Sell 46926.73 34429 Ordinary 34429 20/08/2026 Sell 46198.26 33477 Ordinary 33477 28/08/2026 Sell 53863.92 39600 Ordinary 39600 14/09/2026 Sell 104749.13 87211 Ordinary 87211 15/09/2026 Sell 173156.15 146519 Ordinary 146519 21/09/2026 Sell 59072.44 49433 Ordinary 49433 28/09/2026 Sell 142080.00 120000 Ordinary 120000 7/10/2026 Sell 84510.23 71017 Ordinary 71017 8/10/2026 Sell 59790.00 50000 Ordinary 50000 9/10/2026 Sell 32535.55 26900 Ordinary 26900 12/10/2026 Sell 184547.40 151741 Ordinary 151741 13/10/2026 Sell 32723.57 26827 Ordinary 26827 20/10/2026 Sell 115545.60 96000 Ordinary 96000 Regal Partners Funds Management Pty Limited as investment manager (and, where applicable, Regal Partners Holdings Pty Limited as trustee) (and Regal Partners Limited by virtue of its control of such entitles) Regal Partners Funds Management Pty Limited as investment manager (and, where applicable, Regal Partners Holdings Pty Limited as trustee) (and Regal Partners Limited by virtue of its control of such entitles) Regal Partners Funds Management Pty Limited as investment manager (and, where applicable, Regal Partners Holdings Pty Limited as trustee) (and Regal Partners Limited by virtue of its control of such entitles) Regal Partners Funds Management Pty Limited as investment manager (and, where applicable, Regal Partners Holdings Pty Limited as trustee) (and Regal Partners Limited by virtue of its control of such entitles) Regal Partners Funds Management Pty Limited as investment manager (and, where applicable, Regal Partners Holdings Pty Limited as trustee) (and Regal Partners Limited by virtue of its control of such entitles) Regal Partners Funds Management Pty Limited as investment manager (and, where applicable, Regal Partners Holdings Pty Limited as trustee) (and Regal Partners Limited by virtue of its control of such entitles) Regal Partners Funds Management Pty Limited as investment manager (and, where applicable, Regal Partners Holdings Pty Limited as trustee) (and Regal Partners Limited by virtue of its control of such entitles) Regal Partners Funds Management Pty Limited as investment manager (and, where applicable, Regal Partners Holdings Pty Limited as trustee) (and Regal Partners Limited by virtue of its control of such entitles) Regal Partners Funds Management Pty Limited as investment manager (and, where applicable, Regal Partners Holdings Pty Limited as trustee) (and Regal Partners Limited by virtue of its control of such entitles) Regal Partners Funds Management Pty Limited as investment manager (and, where applicable, Regal Partners Holdings Pty Limited as trustee) (and Regal Partners Limited by virtue of its control of such entitles) Regal Partners Funds Management Pty Limited as investment manager (and, where applicable, Regal Partners Holdings Pty Limited as trustee) (and Regal Partners Limited by virtue of its control of such entitles) Regal Partners Funds Management Pty Limited as investment manager (and, where applicable, Regal Partners Holdings Pty Limited as trustee) (and Regal Partners Limited by virtue of its control of such entitles) Regal Partners Funds Management Pty Limited as investment manager (and, where applicable, Regal Partners Holdings Pty Limited as trustee) (and Regal Partners Limited by virtue of its control of such entitles) Regal Partners Funds Management Pty Limited as investment manager (and, where applicable, Regal Partners Holdings Pty Limited as trustee) (and Regal Partners Limited by virtue of its control of such entitles) Regal Partners Funds Management Pty Limited as investment manager (and, where applicable, Regal Partners Holdings Pty Limited as trustee) (and Regal Partners Limited by virtue of its control of such entitles) Regal Partners Funds Management Pty Limited as investment manager (and, where applicable, Regal Partners Holdings Pty Limited as trustee) (and Regal Partners Limited by virtue of its control of such entitles) 30/10/2026 Holding diluted due to the issue of 136,450 shares on the 30th October 2026. Regal Partners Funds Management Pty Limited as investment manager (and, where applicable, Regal Partners Holdings Pty Limited as trustee) (and Regal Partners Limited by virtue of its control of such entitles)